20 lines
486 B
JavaScript
20 lines
486 B
JavaScript
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// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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"use strict";
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function MyError() {}
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var obj = {};
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obj[Symbol.isConcatSpreadable] = true;
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Object.defineProperty(obj, "length", {
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get: function() { throw new MyError(); }
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});
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assertThrows(function() {
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[].concat(obj);
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}, MyError);
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assertThrows(function() {
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Array.prototype.concat.call(obj, 1, 2, 3);
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}, MyError);
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